1 //===----------------------------------------------------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is dual licensed under the MIT and the University of Illinois Open 6 // Source Licenses. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 // See bugs.llvm.org/PR20183 11 // 12 // XFAIL: with_system_cxx_lib=macosx10.11 13 // XFAIL: with_system_cxx_lib=macosx10.10 14 // XFAIL: with_system_cxx_lib=macosx10.9 15 // XFAIL: with_system_cxx_lib=macosx10.8 16 // XFAIL: with_system_cxx_lib=macosx10.7 17 18 // <random> 19 20 // class random_device; 21 22 // result_type operator()(); 23 24 #include <random> 25 #include <cassert> 26 27 #include "test_macros.h" 28 main()29int main() 30 { 31 { 32 std::random_device r; 33 std::random_device::result_type e = r(); 34 ((void)e); // Prevent unused warning 35 } 36 37 #ifndef TEST_HAS_NO_EXCEPTIONS 38 try 39 { 40 std::random_device r("/dev/null"); 41 (void)r(); 42 LIBCPP_ASSERT(false); 43 } 44 catch (const std::system_error&) 45 { 46 } 47 #endif 48 } 49